Determination of DNA-base orientation on carbon nanotubes through directional optical absorbance

作者：Meng Sheng; Wang Wei L; Maragakis Paul; Kaxiras Efthimios^*

来源：Nano Letters, 2007, 7(8): 2312-2316.

DOI：10.1021/nl070953w

We develop an approach for determining the orientation of DNA bases attached to carbon nanotubes (CNTs), by combining ab initio time-dependent density functional theory and optical spectroscopy measurements. The structures we find are in good agreement with the geometry of nucleosides on a (10,0) CNT obtained from molecular simulations using empirical force fields. The results shed light into the complex interactions of the DNA-CNT system, a candidate for ultrafast DNA sequencing through electronic probes.

• 出版日期2007-8